145504243 has 2 divisors, whose sum is σ = 145504244. Its totient is φ = 145504242.

The previous prime is 145504213. The next prime is 145504253. The reversal of 145504243 is 342405541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145504243 - 2⁵ = 145504211 is a prime.

It is not a weakly prime, because it can be changed into another prime (145504213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72752121 + 72752122.

It is an arithmetic number, because the mean of its divisors is an integer number (72752122).

Almost surely, 2^145504243 is an apocalyptic number.

145504243 is a deficient number, since it is larger than the sum of its proper divisors (1).

145504243 is an equidigital number, since it uses as much as digits as its factorization.

145504243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 145504243 is about 12062.5139585411. The cubic root of 145504243 is about 525.9670677238.

Adding to 145504243 its reverse (342405541), we get a palindrome (487909784).

The spelling of 145504243 in words is "one hundred forty-five million, five hundred four thousand, two hundred forty-three".